LOESS
| Date | Clue |
|---|---|
| 2026-05-22 | Rich soil deposit |
| 2023-06-18 | Windblown soil |
| 2023-06-04 | Silty soil |
| 2021-07-31 | Porous soil |
| 2020-05-26 | Fertile soil |
| 2019-07-05 | Good earth |
| 2019-03-21 | Good earth |
| 2017-11-27 | Fertile soil |
| 2017-10-24 | Loamy soil |
| 2017-04-29 | Good earth |
| 2014-08-20 | Windblown soil |
| 2012-12-11 | Loamy soil |
| 2012-11-13 | Good earth |
| 2011-05-08 | Windblown soil |
| 2011-03-11 | Good earth |
| 2010-12-21 | Windblown soil |
| 2010-07-20 | Rich soil deposit |
| 2009-08-23 | Windblown soil |
| 2008-09-07 | Loamy soil |
| 2007-12-27 | Windblown deposit |
| 2006-02-20 | Windblown soil |
| 2004-08-10 | Silt deposit |
| 2004-02-19 | Wind-borne deposits |
| 2002-10-15 | Windblown soil |
| 2002-06-09 | Good earth |
| 2001-12-06 | Fertile soil |
| 2001-11-06 | Loamy deposit |
| 2001-09-04 | Loamy soil |
| 2001-07-10 | Windblown soil |
| 2001-04-29 | Gardener's soil |
| 2001-03-13 | Wind-borne soil |
| 2000-11-24 | Loamy deposit |
| 2000-07-11 | Windblown soil |
| 2000-06-22 | Windblown soil |
| 2000-02-28 | Fertile soil |
| 1999-06-07 | Windborne deposit |
| 1999-04-08 | Loamy deposit |
| 1998-09-05 | Mississippi Valley deposit |
| 1997-12-24 | Loamy soil deposit |
| 1995-09-28 | Loamy soil |
| 1994-11-28 | Loamy soil |